body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f9ff;
  color: #1f2937;
}

header {
  background: linear-gradient(90deg, #38bdf8, #2563eb);
  color: white;
  text-align: center;
  padding: 40px;
}

.menu {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  padding: 15px;
  background: #ffffff;
}

.menu a {
  text-decoration: none;
  color: #2563eb;
  font-weight: bold;
  padding: 8px 12px;
  border-radius: 8px;
  background: #eaf3ff;
}

.menu a:hover {
  background: #dbeafe;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  padding: 30px;
  max-width: 1100px;
  margin: auto;
}

.card {
  background: white;
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.card img {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 10px;
}

.card a {
  display: inline-block;
  margin-top: 10px;
  padding: 8px 12px;
  background: #2563eb;
  color: white;
  border-radius: 8px;
  text-decoration: none;
}